/**
 * Copyright (c) 2011-2014, hubin (jobob@qq.com).
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may
 * obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
 * and limitations under the License.
 */
package com.ld.shieldsb.annotation.field.db;

/**
 * <p>
 * 生成ID类型枚举类
 * </p>
 *
 */
public enum IdType {

    /** 数据库ID自增 */
    AUTO(0, "数据库ID自增"),
    /** 用户输入ID */
    INPUT(1, "用户输入ID"),
    /* 以下2种类型、只有当插入对象ID 为空，才自动填充。 */
    /** 全局唯一ID */
    ID(2, "全局唯一ID"),
    /** 全局唯一uuid */
    UUID(3, "全局唯一ID");

    /**
     * 主键
     */
    private final int key;

    /**
     * 描述
     */
    private final String desc;

    IdType(final int key, final String desc) {
        this.key = key;
        this.desc = desc;
    }

    /**
     * <p>
     * 主键策略 （默认 ID）
     * </p>
     *
     * @param idType
     *            ID 策略类型
     * @return
     */
    public static IdType getIdType(int idType) {
        IdType[] its = IdType.values();
        for (IdType it : its) {
            if (it.getKey() == idType) {
                return it;
            }
        }
        return ID;
    }

    public int getKey() {
        return this.key;
    }

    public String getDesc() {
        return this.desc;
    }

}
